Forums Ultimate UI for Windows Forms
Your Privacy Matters: We use our own and third-party cookies to improve your experience on our website. By continuing to use the website we understand that you accept their use. Cookie Policy
Close
Alexander Matthews
1833
Custom Format Summary - Time String from Seconds
posted

I have a grid that contains an integer column that represents time in seconds.

Currently I simply have a computed column that converts seconds to time string and I hide the original. However, this obviously does not allow me to use the summaries as its a string.

I need to do 2 things as follows...

1) Although I'm happy with the default summaries (Sum, avg, max and min) I need to format the results to convert the time in seconds to something like '1 hr 20 mins 12 secs'. I have a function that can do this yet I'm not sure how I can override the [summary].DisplayFormat to allow me to utilise this custom function. It would need to use the summary value and pass it down to my function which would return a correctly formatted string.

2) I would also like to know how I can get the [column].format function to utilise my own custom function to generate the string value that will be displayed in the grid.

I assume that there is some way to do this, as there is a way to override the summaries via an interface.

Thanks!

  • 1995
    posted

    Hai,

    Sample code to sum the time value :

     

    Public Class TimeSummaryCalculator
        Implements ICustomSummaryCalculator
        Private lnSeconds As Decimal = 0
    #Region "ICustomSummaryCalculator Procedures & Functions"
        Private Sub ICustomSummaryCalculator_AggregateCustomSummary(ByVal summarySettings As SummarySettings, ByVal row As UltraGridRow) Implements ICustomSummaryCalculator.AggregateCustomSummary
                Dim loValue As Object = row.Cells(summarySettings.SourceColumn).Value
                lnSeconds += QbConvert(loValue, "T", "S")  'qbconvert is a function which is use to convert seconds to  time and viceversa
        End Sub
        Private Sub ICustomSummaryCalculator_BeginCustomSummary(ByVal summarySettings As SummarySettings, ByVal rows As RowsCollection) Implements ICustomSummaryCalculator.BeginCustomSummary
                lnSeconds = 0
        End Sub
        Private Function ICustomSummaryCalculator_EndCustomSummary(ByVal summarySettings As SummarySettings, ByVal rows As RowsCollection) As Object Implements ICustomSummaryCalculator.EndCustomSummary
                Return QbConvert(lnSeconds, "S", "T") 'qbconvert is a function which is use to convert seconds to  time and viceversa
        End Function
    #End Region
    End Class

     

    Add the below line in your code

    Dim QbGrdSummary As New SummarySettings
    QbGrdSummary = Grid.DisplayLayout.Bands(0).Summaries.Add(Grid.DisplayLayout.Bands(0).Columns("timecolumn").Key, SummaryType.Custom, _
                                                              New TimeSummaryCalculator, Grid.DisplayLayout.Bands(0).Columns("timecolumn"), SummaryPosition.UseSummaryPositionColumn, _
                                                              Grid.DisplayLayout.Bands(0).Columns("timecolumn")):

     

  • 12333
    posted

    Hi, how's it going?

     

    There sure is a way to do this! Check out this help topic that explains how to create your own custom summary calculator, how to implement the logic, as well as how to assign it to the WinGrid control:

     

    http://help.infragistics.com/NetAdvantage/WinForms/2010.1/CLR2.0/?page=Infragistics2.Win.UltraWinGrid.v10.1~Infragistics.Win.UltraWinGrid.SummarySettingsCollection~Add(String,SummaryType,ICustomSummaryCalculator,UltraGridColumn,SummaryPosition,UltraGridColumn).html